[填空题]
The cliff divers of Acapulco push off horizontally frrh*9)3 kl70ixs yxof-w aqk4.z +xew com /,;q goiv5 n7eke c/y7zh,rbl rock platforms about 35 m above the water, but they must clear rocky outcrops at water level that extend out into the water 5.0 m from the base of the cliff directly under their la/k bieqloc 75,hzr7 vgye/n,;unch point. See Fig. below. What minimum pushoff speed is necessary to clear the rocks? How long are they in the air?
